Automatic oil and gas separating pump



April 28, 1925.

A. M. CHRISMAN ET AL AUTOMATIC OIL AND GAS SEPARATING PUMP Filed Dec. e, 1924 INVEN Patented rhpr, d, ld,

hliditlil sri/tres lenteur-ernten,

ALBERT llit. CHRISMN AND JACK E. WELLS, UF PACIFC, UALIEFORNA.

AUTOMATIC @EL All@ GAS SEPABJTXNG PUMP.

Application filed December t', 1924:. Serial No. 754,347.

To all whom, t may' concern.:

Be it known that we, ALBERT ll/l. @mais MAN and JACK E. l/VnLLs, citizens of the United States, residingat Pacifico, in the county ot lKern and `State l" California, have invented certain new and useful lmprovements in Automatic @il and Gas Separating lumps, of which thev following is a specification.

@ur invention relates to the class ol" pumps adapted 'lor use in the production ot petroleum. lt is especially applicable in wells where gas is present, in that i-t is capable ot automatically separating the oil and gas, said separation talring place at the point where the oil enters the pump, the gas being mainly excluded, thus relieving the pumping instrumentalities of its presence, resulting in distinct advantages.

Uur present invention is an improvement in the construction et the oil and gas separating pump oit our application Serial Number 693873, tiled February 16, 1924-,

which application has resulted in lPatent No. 1,5ll,200, dated November l, i924.

llie object otl the present improvement is to provide for the simple and ready repair und resetting ot the standing-valve assembly without disassembling the pump, so that the work can be done edectually and without loss .ot time at the Well itselt, instead of having, as in our previous case to dismember the pump and reassemble it with special appliances found only in a shop usually far removed from' the well.

rllie nature ot our improvement and man-- ner in which our object is attained will here ina iter tuily appear.

lerici-ring to the accompanying drawinn-sma itis'. l is a vertical section ol the barrel portion of our pump and its connections, the liners being in elevation `whereby the valve and plunger assembly does not appear,

itin'. 2 is a vertical section enlarged and broken, ol that portion of our pump which includes the valve .and plunger assembly.

l? 3 is a 'vertical section of that por tion ot the pump in the region in which the separetion ot' the gas taires place, showing the point otentrenoe ot the oil to the an`I nular-space within the pumpbarre",

lling, l is a vertieel section of thetportion el the pump in the region in which the oil :trom the pump barrel enters the interior the pump to be directed to the plunger' and valve assembly. y

l is a well and 2 is a casing therein. 3 is the barrel ol the pump which at its upper end is eonnectedby' the coupling 5 with the tubing-string el leading to the surface. At the lower end the barrel is connected by a coupling Z with the tail pipe t3, the bottom of which is closed, as seen in Fig. ll, thus forming e sealed reservoir.

ll/lithin the pump barrel 3 are the liner members 8, usually, as here shown,y comprisingl a plurality of aligned abutting sections. These liners have an exterior diameter sul liciently smaller than the interior'diameter ol the barrel 3 to 'leave an intervening space indicated by 9 The top liner-has a collar l0, Fig. l, on its upper end which closely tits the barrel thus closing the space 9 above. 'lhe bottom liner rests upon the top of the inserted upper or collar portion 7 ot the lower couplingo 7, as seen clearly in l41 igs. 2 and l, and said collar portion, in conjunction with the lower end of the vupper coupling against which the collar 10. ot the top liner bears, holds all the liner sections in place.

The barrel 3 near its upper end has the ports or openings 3 through which the well interior communicates with the upper portion of the space 9, as shown in Figs. l and The lower coupling 7 has in its inserted collar portion 7 the ports or opening l1 through which the space l) at its lower end communicates with the sealed reservoir till till

lili

formed by the tail pipe 6, as shown iny Figs.

2 and ll.

l2 in Fig. 2 is the upper or traveling-valve assembly, with which is connected the sucker rod string lll above and the hollow plunger lll below..

15 is the lower or standing-valve assembly which is seated in the upper end of a removable bottom shoe lll screwed into collar poi'- tion T oit the lower coupling 7. Said valve assembly has extending downwardly from it the anchor or suction pipe l?, and is connected above with the plunger ll by means ot the usual f nirbutt rod 18, to enable said assembly to be pulled out with the other working parts oit the pump, 2.

lhe operation ol the device, as indicated by the arrows, is the same, as lar as the separation ot the gas end liquid is concerned, es that ot the pump ol nur previous patent above noted, that is to say, the gas and liquid rise together in the well.

At the upper ports 3 the separation takes place, the gas passing on up in the well,

while the liquid passes through said ports 3 into the space 9. In this space the liquid descends and passes through the ports 11 in the inserted collar portion 7 of the lower coupling 7, into the sealed reservoir formed by the tail pipe 6. lt thence passes `up through the anchor or suction pipe 1.7,

the standing-valve assembly 15, the plunger 14, the traveling-valve assembly 12 and the tubing string 4 to the surface.

In the pump of our previous application the lower communication of the space 9 with the sealed reservoir of the tail pipe 6 is through ports in the bottom liner Section.

Also in that pump the standing valve assem-v the. lower coupling which holds the liners in place, and when this coupling is removed, the liners will drop from position. lin this case, there is no way at the well oi reassembling the pump liners, since this must be done in the shop .on an expanding mandrel, in order that they may be accurately lined up.

By our present improvement, however, the necessary repair can be made at the well, without disassembling the pump, since all that is necessary, alter the pump is pulled, is to unscrew the tail pipe Girone. the coupling 7, then unscrew from said coupling the bottom shoe 16 which supports the standing-valve assembly, and finally remove said assembly. This operation leaves the coupling 7 with its inserted collar portion 7 in place, thereby holding the liners in position. Also by having the ports 11 in the inserted collar ot the coupling 7, the necessary communication between the space 9 and the sealed reservoir of the tail pipe 6 is provided for.

We claim 1. An oill and gas separatmg pump comprising a barrel .adapted for suspension in a well; a liner within and spaced from said barrel, the space between the barrel and liner being closed above, and said .barrel having ports through which the well communicates with they upper portion of said space; a coupling iitted to the upper end 0f the barrel and abutting against the upper end of the-liner;` a coupling fitted to the lower end of the barrel, said coupling having an inserted portion abutting against the lower end of the liner, said inserted portion having ports leading from the lower end of the space between the liner and barrel; atail pipe` having a closed foot fitted to the lower end of the lower coupling and communicating with the ports in the inserted portion of said coupling; a tubular bottom shoe fitted interiorly to the upper portion of said lower coupling and spaced from the tail pipe; and pumping instrumentalities within the liner, intermediate the upper and lower ports, and comprising a standing valve assembly and suction pipe, carried by said bottom shoe, a plunger above said standing valve assembly and a traveling valve assembly associated with said plunger.

2. An oil and gas separating pump comprising a barrel adapted for suspension in a well; a plurality of abutting, aligned liner sections within and spaced from said barrel, the space between the barrel and liner sections being closed above, and said barrel having ports through which the well communicates with the upper portion of said space; a coupling itted to the upper end of the barrel and abutting against the upper end of the uppermost liner section; a

coupling fitted to the lower end of the bar- .L

rel, said coupling having an inserted portion abutting against the lower end of the lowermost liner section, said inserted portion having ports leading from the lower end o the space between the liner sections and barrel; a tail pipe having a closed port, fitted to the lower end of the lower coupling and communicating with the` ports in the in serted portion of said coupling; a tubular bottom shoe fitted interiorly to the upper portion of said lower coupling and spaced `from the tail-pipe; and pumping instru- Inentalities within the liner section, inter'- mediate the upper and lower ports, and comprising a standing valve assembly and suction pipe, carried by said bottom shoe, a, plunger above said standing valve assembly and a traveling valve assembly associated with said plunger.

In testimony whereof We have signed our names to this specification.

renner ivi.- crimen/in ,mort n. wenns, 

